"Hennessy" Surname

Frequency of "Hennessy" Surname in the US

2000 US Census

Accoring to the US Census Bureau, "Hennessy" ranked #3,550 in frequency out of
151,671 surnames for which statistics were released from the 2000 Census.
9,187 people, or approximately 1 in every 29,363
individuals in the US had this surname in 2000.

1990 US Census

Accoring to the US Census Bureau, "Hennessy" ranked #5,161 in frequency out of
88,799 surnames for which statistics were released from the 1990 Census.
Approximately 1 in every 50,000 individuals in the US had this surname in 1990.